Ancrenaz, M., Ambu, L., Sunjoto, I., Ahmad, E., Manokaran, K., Meijaard, E., & Lackman, I. (2010). Recent Surveys in the Forests of Ulu Segama Malua, Sabah, Malaysia, Show That Orang-utans (P. p. morio) Can Be Maintained in Slightly Logged Forests. Public Library of Science.

Ancrenaz, Marc, Laurentius Ambu, Indra Sunjoto, Eddie Ahmad, Kennesh Manokaran, Erik Meijaard, ja Isabelle Lackman. Recent Surveys in the Forests of Ulu Segama Malua, Sabah, Malaysia, Show That Orang-utans (P. P. Morio) Can Be Maintained in Slightly Logged Forests. Public Library of Science, 2010.

Ancrenaz, Marc, et al. Recent Surveys in the Forests of Ulu Segama Malua, Sabah, Malaysia, Show That Orang-utans (P. P. Morio) Can Be Maintained in Slightly Logged Forests. Public Library of Science, 2010.